The purpose of this study is to learn more about risks and outcomes of breast cancer in people with different backgrounds. Tissue and blood will be collected from participants for research purposes. Participants will complete questionnaires during their standard medical care. The study will not provide treatment for cancer or any other condition.

Women 18 years and older who are patients with a suspicious breast finding who present to breast radiology at MSK for biopsy or any new breast cancer patient seen at MSK undergoing surgery.

Inclusion Criteria:

A patient cannot be considered eligible for this study unless the following conditions are met.

• Patients with a suspicious breast finding who present to breast radiology at MSK for biopsy or any new breast cancer patient who is a surgical candidate seen at MSK.
• Women 18 years of age and older are eligible to participate in the study.

Exclusion Criteria:

• Patients presenting with a suspicious breast mass or breast cancer less than 1 cm.
• Patients presenting to clinic with only microinvasion
• Patients who are less than 18 years of age
• Patients unable to complete the survey, including IDMC patients.

MSK research staff and/or treating clinicians will identify participants (anyone meeting inclusion criteria listed above) prior to or during their regularly scheduled visits (Breast radiology at time of initial biopsy, Surgery clinic visit, Medical Oncology clinic visit). A member of the MSK study team will approach the participants either in person or remotely to explain details of the study and answer any questions.

Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on clinicaltrials.gov when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made following one year after publication and for up to 36 months later. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to: crdatashare@mskcc.org.